00-06 gm suv suspension kits
Wont get much better than those kits...just depends on how much money you wanna spend and how low you wanna go.
I put the 3/5.5" kit on mine along with the Sphon Pan Hard Bar.
Only pic I have of my suburban lowered. Suspension was not adjusted at all in this pic. It sits level now.
Oh and i did this drop myself in my driveway. I dont suggest you do it all by yourself, at least have one friend there to help you get tools and part and have another on standby in case you need to run to the store.